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/* Copyright 2008-2021 Codership Oy <http://www.codership.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */
#ifndef WSREP_MYSQLD_H
#define WSREP_MYSQLD_H
#include <wsrep.h>
#ifdef WITH_WSREP
extern bool WSREP_ON_;
extern bool WSREP_PROVIDER_EXISTS_;
#include <mysql/plugin.h>
#include "mysql/service_wsrep.h"
#include <my_global.h>
#include <my_pthread.h>
#include "log.h"
#include "mysqld.h"
typedef struct st_mysql_show_var SHOW_VAR;
#include <sql_priv.h>
#include "mdl.h"
#include "sql_table.h"
#include "wsrep_mysqld_c.h"
#include "wsrep/provider.hpp"
#include "wsrep/streaming_context.hpp"
#include "wsrep_api.h"
#include <vector>
#include "wsrep_server_state.h"
#define WSREP_UNDEFINED_TRX_ID ULONGLONG_MAX
class set_var;
class THD;
enum wsrep_consistency_check_mode {
NO_CONSISTENCY_CHECK,
CONSISTENCY_CHECK_DECLARED,
CONSISTENCY_CHECK_RUNNING,
};
// Global wsrep parameters
// MySQL wsrep options
extern const char* wsrep_provider;
extern const char* wsrep_provider_options;
extern const char* wsrep_cluster_name;
extern const char* wsrep_cluster_address;
extern const char* wsrep_node_name;
extern const char* wsrep_node_address;
extern const char* wsrep_node_incoming_address;
extern const char* wsrep_data_home_dir;
extern const char* wsrep_dbug_option;
extern long wsrep_slave_threads;
extern int wsrep_slave_count_change;
extern ulong wsrep_debug;
extern my_bool wsrep_convert_LOCK_to_trx;
extern ulong wsrep_retry_autocommit;
extern my_bool wsrep_auto_increment_control;
extern my_bool wsrep_drupal_282555_workaround;
extern my_bool wsrep_incremental_data_collection;
extern const char* wsrep_start_position;
extern ulong wsrep_max_ws_size;
extern ulong wsrep_max_ws_rows;
extern const char* wsrep_notify_cmd;
extern my_bool wsrep_certify_nonPK;
extern long int wsrep_protocol_version;
extern ulong wsrep_forced_binlog_format;
extern my_bool wsrep_desync;
extern ulong wsrep_reject_queries;
extern my_bool wsrep_recovery;
extern my_bool wsrep_replicate_myisam;
extern my_bool wsrep_log_conflicts;
extern ulong wsrep_mysql_replication_bundle;
extern my_bool wsrep_load_data_splitting;
extern my_bool wsrep_restart_slave;
extern my_bool wsrep_restart_slave_activated;
extern my_bool wsrep_slave_FK_checks;
extern my_bool wsrep_slave_UK_checks;
extern ulong wsrep_trx_fragment_unit;
extern ulong wsrep_SR_store_type;
extern uint wsrep_ignore_apply_errors;
extern ulong wsrep_running_threads;
extern ulong wsrep_running_applier_threads;
extern ulong wsrep_running_rollbacker_threads;
extern bool wsrep_new_cluster;
extern bool wsrep_gtid_mode;
extern uint32 wsrep_gtid_domain_id;
enum enum_wsrep_reject_types {
WSREP_REJECT_NONE, /* nothing rejected */
WSREP_REJECT_ALL, /* reject all queries, with UNKNOWN_COMMAND error */
WSREP_REJECT_ALL_KILL /* kill existing connections and reject all queries*/
};
enum enum_wsrep_OSU_method {
WSREP_OSU_TOI,
WSREP_OSU_RSU,
WSREP_OSU_NONE,
};
enum enum_wsrep_sync_wait {
WSREP_SYNC_WAIT_NONE= 0x0,
// select, begin
WSREP_SYNC_WAIT_BEFORE_READ= 0x1,
WSREP_SYNC_WAIT_BEFORE_UPDATE_DELETE= 0x2,
WSREP_SYNC_WAIT_BEFORE_INSERT_REPLACE= 0x4,
WSREP_SYNC_WAIT_BEFORE_SHOW= 0x8,
WSREP_SYNC_WAIT_MAX= 0xF
};
enum enum_wsrep_ignore_apply_error {
WSREP_IGNORE_ERRORS_NONE= 0x0,
WSREP_IGNORE_ERRORS_ON_RECONCILING_DDL= 0x1,
WSREP_IGNORE_ERRORS_ON_RECONCILING_DML= 0x2,
WSREP_IGNORE_ERRORS_ON_DDL= 0x4,
WSREP_IGNORE_ERRORS_MAX= 0x7
};
// Streaming Replication
#define WSREP_FRAG_BYTES 0
#define WSREP_FRAG_ROWS 1
#define WSREP_FRAG_STATEMENTS 2
#define WSREP_SR_STORE_NONE 0
#define WSREP_SR_STORE_TABLE 1
extern const char *wsrep_fragment_units[];
extern const char *wsrep_SR_store_types[];
// MySQL status variables
extern my_bool wsrep_connected;
extern my_bool wsrep_ready;
extern const char* wsrep_cluster_state_uuid;
extern long long wsrep_cluster_conf_id;
extern const char* wsrep_cluster_status;
extern long wsrep_cluster_size;
extern long wsrep_local_index;
extern long long wsrep_local_bf_aborts;
extern const char* wsrep_provider_name;
extern const char* wsrep_provider_version;
extern const char* wsrep_provider_vendor;
extern char* wsrep_provider_capabilities;
extern char* wsrep_cluster_capabilities;
int wsrep_show_status(THD *thd, SHOW_VAR *var, void *buff,
system_status_var *status_var, enum_var_type scope);
int wsrep_show_ready(THD *thd, SHOW_VAR *var, char *buff);
void wsrep_free_status(THD *thd);
void wsrep_update_cluster_state_uuid(const char* str);
/* Filters out --wsrep-new-cluster oprtion from argv[]
* should be called in the very beginning of main() */
void wsrep_filter_new_cluster (int* argc, char* argv[]);
int wsrep_init();
void wsrep_deinit(bool free_options);
/* Initialize wsrep thread LOCKs and CONDs */
void wsrep_thr_init();
/* Destroy wsrep thread LOCKs and CONDs */
void wsrep_thr_deinit();
void wsrep_recover();
bool wsrep_before_SE(); // initialize wsrep before storage
// engines (true) or after (false)
/* wsrep initialization sequence at startup
* @param before wsrep_before_SE() value */
void wsrep_init_startup(bool before);
/* Recover streaming transactions from fragment storage */
void wsrep_recover_sr_from_storage(THD *);
// Other wsrep global variables
extern my_bool wsrep_inited; // whether wsrep is initialized ?
extern "C" void wsrep_fire_rollbacker(THD *thd);
extern "C" uint32 wsrep_thd_wsrep_rand(THD *thd);
extern "C" time_t wsrep_thd_query_start(THD *thd);
extern void wsrep_close_client_connections(my_bool wait_to_end,
THD *except_caller_thd= NULL);
extern "C" query_id_t wsrep_thd_wsrep_last_query_id(THD *thd);
extern "C" void wsrep_thd_set_wsrep_last_query_id(THD *thd, query_id_t id);
extern int wsrep_wait_committing_connections_close(int wait_time);
extern void wsrep_close_applier(THD *thd);
extern void wsrep_wait_appliers_close(THD *thd);
extern void wsrep_close_applier_threads(int count);
/* new defines */
extern void wsrep_stop_replication(THD *thd);
extern bool wsrep_start_replication(const char *wsrep_cluster_address);
extern void wsrep_shutdown_replication();
extern bool wsrep_must_sync_wait (THD* thd, uint mask= WSREP_SYNC_WAIT_BEFORE_READ);
extern bool wsrep_sync_wait (THD* thd, uint mask= WSREP_SYNC_WAIT_BEFORE_READ);
extern enum wsrep::provider::status
wsrep_sync_wait_upto (THD* thd, wsrep_gtid_t* upto, int timeout);
extern int wsrep_check_opts();
extern void wsrep_prepend_PATH (const char* path);
extern bool wsrep_append_fk_parent_table(THD* thd, TABLE_LIST* table, wsrep::key_array* keys);
extern bool wsrep_reload_ssl();
/* Other global variables */
extern wsrep_seqno_t wsrep_locked_seqno;
#define WSREP_ON unlikely(WSREP_ON_)
/* use xxxxxx_NNULL macros when thd pointer is guaranteed to be non-null to
* avoid compiler warnings (GCC 6 and later) */
#define WSREP_NNULL(thd) \
(WSREP_PROVIDER_EXISTS_ && thd->variables.wsrep_on)
#define WSREP(thd) \
(thd && WSREP_NNULL(thd))
#define WSREP_CLIENT_NNULL(thd) \
(WSREP_NNULL(thd) && thd->wsrep_client_thread)
#define WSREP_CLIENT(thd) \
(WSREP(thd) && thd->wsrep_client_thread)
#define WSREP_EMULATE_BINLOG_NNULL(thd) \
(WSREP_NNULL(thd) && wsrep_emulate_bin_log)
#define WSREP_EMULATE_BINLOG(thd) \
(WSREP(thd) && wsrep_emulate_bin_log)
#define WSREP_BINLOG_FORMAT(my_format) \
((wsrep_forced_binlog_format != BINLOG_FORMAT_UNSPEC) ? \
wsrep_forced_binlog_format : my_format)
/* A wrapper function for MySQL log functions. The call will prefix
the log message with WSREP and forward the result buffer to fun. */
void WSREP_LOG(void (*fun)(const char* fmt, ...), const char* fmt, ...);
#define WSREP_DEBUG(...) \
if (wsrep_debug) WSREP_LOG(sql_print_information, ##__VA_ARGS__)
#define WSREP_INFO(...) WSREP_LOG(sql_print_information, ##__VA_ARGS__)
#define WSREP_WARN(...) WSREP_LOG(sql_print_warning, ##__VA_ARGS__)
#define WSREP_ERROR(...) WSREP_LOG(sql_print_error, ##__VA_ARGS__)
#define WSREP_UNKNOWN(fmt, ...) WSREP_ERROR("UNKNOWN: " fmt, ##__VA_ARGS__)
#define WSREP_LOG_CONFLICT_THD(thd, role) \
WSREP_INFO("%s: \n " \
" THD: %lu, mode: %s, state: %s, conflict: %s, seqno: %lld\n " \
" SQL: %s", \
role, \
thd_get_thread_id(thd), \
wsrep_thd_client_mode_str(thd), \
wsrep_thd_client_state_str(thd), \
wsrep_thd_transaction_state_str(thd), \
wsrep_thd_trx_seqno(thd), \
wsrep_thd_query(thd) \
);
#define WSREP_LOG_CONFLICT(bf_thd, victim_thd, bf_abort) \
if (wsrep_debug || wsrep_log_conflicts) \
{ \
WSREP_INFO("cluster conflict due to %s for threads:", \
(bf_abort) ? "high priority abort" : "certification failure" \
); \
if (bf_thd) WSREP_LOG_CONFLICT_THD(bf_thd, "Winning thread"); \
if (victim_thd) WSREP_LOG_CONFLICT_THD(victim_thd, "Victim thread"); \
WSREP_INFO("context: %s:%d", __FILE__, __LINE__); \
}
#define WSREP_PROVIDER_EXISTS (WSREP_PROVIDER_EXISTS_)
static inline bool wsrep_cluster_address_exists()
{
if (mysqld_server_started)
mysql_mutex_assert_owner(&LOCK_global_system_variables);
return wsrep_cluster_address && wsrep_cluster_address[0];
}
extern my_bool wsrep_ready_get();
extern void wsrep_ready_wait();
class Ha_trx_info;
struct THD_TRANS;
extern mysql_mutex_t LOCK_wsrep_ready;
extern mysql_cond_t COND_wsrep_ready;
extern mysql_mutex_t LOCK_wsrep_sst;
extern mysql_cond_t COND_wsrep_sst;
extern mysql_mutex_t LOCK_wsrep_sst_init;
extern mysql_cond_t COND_wsrep_sst_init;
extern int wsrep_replaying;
extern mysql_mutex_t LOCK_wsrep_replaying;
extern mysql_cond_t COND_wsrep_replaying;
extern mysql_mutex_t LOCK_wsrep_slave_threads;
extern mysql_cond_t COND_wsrep_slave_threads;
extern mysql_mutex_t LOCK_wsrep_cluster_config;
extern mysql_mutex_t LOCK_wsrep_desync;
extern mysql_mutex_t LOCK_wsrep_SR_pool;
extern mysql_mutex_t LOCK_wsrep_SR_store;
extern mysql_mutex_t LOCK_wsrep_config_state;
extern mysql_mutex_t LOCK_wsrep_group_commit;
extern mysql_mutex_t LOCK_wsrep_joiner_monitor;
extern mysql_mutex_t LOCK_wsrep_donor_monitor;
extern mysql_cond_t COND_wsrep_joiner_monitor;
extern mysql_cond_t COND_wsrep_donor_monitor;
extern my_bool wsrep_emulate_bin_log;
extern int wsrep_to_isolation;
#ifdef GTID_SUPPORT
extern rpl_sidno wsrep_sidno;
#endif /* GTID_SUPPORT */
extern my_bool wsrep_preordered_opt;
#ifdef HAVE_PSI_INTERFACE
extern PSI_cond_key key_COND_wsrep_thd;
extern PSI_mutex_key key_LOCK_wsrep_ready;
extern PSI_mutex_key key_COND_wsrep_ready;
extern PSI_mutex_key key_LOCK_wsrep_sst;
extern PSI_cond_key key_COND_wsrep_sst;
extern PSI_mutex_key key_LOCK_wsrep_sst_init;
extern PSI_cond_key key_COND_wsrep_sst_init;
extern PSI_mutex_key key_LOCK_wsrep_sst_thread;
extern PSI_cond_key key_COND_wsrep_sst_thread;
extern PSI_mutex_key key_LOCK_wsrep_replaying;
extern PSI_cond_key key_COND_wsrep_replaying;
extern PSI_mutex_key key_LOCK_wsrep_slave_threads;
extern PSI_cond_key key_COND_wsrep_slave_threads;
extern PSI_mutex_key key_LOCK_wsrep_cluster_config;
extern PSI_mutex_key key_LOCK_wsrep_desync;
extern PSI_mutex_key key_LOCK_wsrep_SR_pool;
extern PSI_mutex_key key_LOCK_wsrep_SR_store;
extern PSI_mutex_key key_LOCK_wsrep_global_seqno;
extern PSI_mutex_key key_LOCK_wsrep_thd_queue;
extern PSI_cond_key key_COND_wsrep_thd_queue;
extern PSI_mutex_key key_LOCK_wsrep_joiner_monitor;
extern PSI_mutex_key key_LOCK_wsrep_donor_monitor;
extern PSI_file_key key_file_wsrep_gra_log;
extern PSI_thread_key key_wsrep_sst_joiner;
extern PSI_thread_key key_wsrep_sst_donor;
extern PSI_thread_key key_wsrep_rollbacker;
extern PSI_thread_key key_wsrep_applier;
extern PSI_thread_key key_wsrep_sst_joiner_monitor;
extern PSI_thread_key key_wsrep_sst_donor_monitor;
#endif /* HAVE_PSI_INTERFACE */
struct TABLE_LIST;
class Alter_info;
int wsrep_to_isolation_begin(THD *thd, const char *db_, const char *table_,
const TABLE_LIST* table_list,
Alter_info* alter_info= NULL, wsrep::key_array *fk_tables=NULL);
void wsrep_to_isolation_end(THD *thd);
bool wsrep_append_SR_keys(THD *thd);
int wsrep_to_buf_helper(
THD* thd, const char *query, uint query_len, uchar** buf, size_t* buf_len);
int wsrep_create_trigger_query(THD *thd, uchar** buf, size_t* buf_len);
int wsrep_create_event_query(THD *thd, uchar** buf, size_t* buf_len);
void wsrep_init_sidno(const wsrep_uuid_t&);
bool wsrep_node_is_donor();
bool wsrep_node_is_synced();
void wsrep_init_SR();
void wsrep_verify_SE_checkpoint(const wsrep_uuid_t& uuid, wsrep_seqno_t seqno);
int wsrep_replay_from_SR_store(THD*, const wsrep_trx_meta_t&);
class Log_event;
int wsrep_ignored_error_code(Log_event* ev, int error);
int wsrep_must_ignore_error(THD* thd);
bool wsrep_replicate_GTID(THD* thd);
typedef struct wsrep_key_arr
{
wsrep_key_t* keys;
size_t keys_len;
} wsrep_key_arr_t;
bool wsrep_prepare_keys_for_isolation(THD* thd,
const char* db,
const char* table,
const TABLE_LIST* table_list,
wsrep_key_arr_t* ka);
void wsrep_keys_free(wsrep_key_arr_t* key_arr);
extern void
wsrep_handle_mdl_conflict(MDL_context *requestor_ctx,
MDL_ticket *ticket,
const MDL_key *key);
enum wsrep_thread_type {
WSREP_APPLIER_THREAD=1,
WSREP_ROLLBACKER_THREAD=2
};
typedef void (*wsrep_thd_processor_fun)(THD*, void *);
class Wsrep_thd_args
{
public:
Wsrep_thd_args(wsrep_thd_processor_fun fun,
wsrep_thread_type thread_type,
pthread_t thread_id)
:
fun_ (fun),
thread_type_ (thread_type),
thread_id_ (thread_id)
{ }
wsrep_thd_processor_fun fun() { return fun_; }
pthread_t* thread_id() {return &thread_id_; }
enum wsrep_thread_type thread_type() {return thread_type_;}
private:
Wsrep_thd_args(const Wsrep_thd_args&);
Wsrep_thd_args& operator=(const Wsrep_thd_args&);
wsrep_thd_processor_fun fun_;
enum wsrep_thread_type thread_type_;
pthread_t thread_id_;
};
void* start_wsrep_THD(void*);
void wsrep_close_threads(THD *thd);
bool wsrep_is_show_query(enum enum_sql_command command);
void wsrep_replay_transaction(THD *thd);
bool wsrep_create_like_table(THD* thd, TABLE_LIST* table,
TABLE_LIST* src_table,
HA_CREATE_INFO *create_info);
bool wsrep_node_is_donor();
bool wsrep_node_is_synced();
/**
* Check if the wsrep provider (ie the Galera library) is capable of
* doing streaming replication.
* @return true if SR capable
*/
bool wsrep_provider_is_SR_capable();
/**
* Initialize WSREP server instance.
*
* @return Zero on success, non-zero on error.
*/
int wsrep_init_server();
/**
* Initialize WSREP globals. This should be done after server initialization
* is complete and the server has joined to the cluster.
*
*/
void wsrep_init_globals();
/**
* Deinit and release WSREP resources.
*/
void wsrep_deinit_server();
/**
* Convert streaming fragment unit (WSREP_FRAG_BYTES, WSREP_FRAG_ROWS...)
* to corresponding wsrep-lib fragment_unit
*/
enum wsrep::streaming_context::fragment_unit wsrep_fragment_unit(ulong unit);
wsrep::key wsrep_prepare_key_for_toi(const char* db, const char* table,
enum wsrep::key::type type);
#else /* !WITH_WSREP */
/* These macros are needed to compile MariaDB without WSREP support
* (e.g. embedded) */
#define WSREP_ON false
#define WSREP(T) (0)
#define WSREP_NNULL(T) (0)
#define WSREP_EMULATE_BINLOG(thd) (0)
#define WSREP_EMULATE_BINLOG_NNULL(thd) (0)
#define WSREP_BINLOG_FORMAT(my_format) ((ulong)my_format)
#define WSREP_PROVIDER_EXISTS (0)
#define wsrep_emulate_bin_log (0)
#define wsrep_to_isolation (0)
#define wsrep_before_SE() (0)
#define wsrep_init_startup(X)
#define wsrep_check_opts() (0)
#define wsrep_thr_init() do {} while(0)
#define wsrep_thr_deinit() do {} while(0)
#define wsrep_init_globals() do {} while(0)
#define wsrep_create_appliers(X) do {} while(0)
#define wsrep_cluster_address_exists() (false)
#endif /* WITH_WSREP */
#endif /* WSREP_MYSQLD_H */
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